Double-acting spring-hinge.



M. A. ERICKSON.

DOUBLE ACTING SPRING HINGE.

APPLICATION rum) MAY 2a, 1908.

' 927,340. Patented July 6,1909.

I F t I mvmqore WITN/ SE3 I 7 MM MARCUS A. ERICKSON, OF MINNEAPOLIS, MINNESOTA.

DOUBLE-ACTING SPRING-KIN GE.

Specification of Letters Patent.

Patented July 6, mos.

Application filed Hay 23,1908. Serial No. 34,648.

To all whom it may concern:

Be it knomi that I, MARC-Us A. ERICKSON, of Minneapolis, llenncpin. county, Minnesota, have invented certain new and useful improvements in Double Acting Springllingcs, of which the following is a specificatron.

My invention relates to hinges designed for use on double acting dciors, and the object of the invention is to improve the hinge ;hown and described in a certain pending ipplication for Letters Patent of the United States filed by me December 19, 1907, Serial No. 407,108.

The invention consists generally in a douale-acting hinge having a one piece frame.

' Further, the invention consists in means whereby the door may be swung out or lined 1p from one side, thus avoiding the neces- ;ity of passing from one side to the other of ;he door during the centering operation.

. Further, the invention consists in stop delices for limiting the swinging movement of .he door.

Further, the invention consists in various :onstructions and combinations, all as herenafter described and particularly pointed wt in the claims.

In the accompanying draw1ngs for1nmg Jart of this s ciiication, Figure 1 is'an eleration with I: re side plate at the bottom of he door removed. Fig. 2 is a horizontal iectional view on the line :vz of Fig. 1 showng the normal position of the hinge mechrnism. Fig. 3 is a similar view ilustrating he position assumed by the mechanism vheu the door is open. Fig. 4 is a rear ele- 'ation illustrating the position of the finish )late in the rear of the hinge and covering he joint of the side plates. Fig. 5 is a deail view showing the position assumed by he cam plate when the door is pushed be- 'ond the normal stopping point. Figs. 6 .nd 7 are details illustrating the construcion of the frame at the end of the hinge. ig. 8 is a detail view showing the safety top to prevent the door from swinging bepnd the center of the second axis of the cam ate.

In the drawing,' 2 re )rescnts a double winging door, 3 a base plate secured to the loor, and 4 the usual piw'ital connection beween the top of the door and its casing.

opening in the end 7 and riveted or otherwise secured therein. A tongue 12 is pressed or punched out of the part and turned down into the lane of the late (3 and is secured to the ower edge e f the door by a screw 13. A post 14 has its ends riveted in the plates 6 and 11 and fits within a slot 15 in a bolt 16. This bolt has a threaded portion 17 and an adjusting nut 18 thereon between which and the post 14 a coiled spring 19 is arranged and adapted to be put under com ression by the oscillation of said bolt,

the egree of coin ression being regulated by the adjustment 0 the nut 18. A cam plate 19 is mounted on the end of the bolt 16 and has a central recess 20 to receive a pivot pin 21, and smaller recesses 22 on each side of the middle to receive bearings 23 on a plate 24 that is journaled on the pin 21. This plate has recesses 25 in the rear of the bearings 23 to receive the rounded surfaces of bearing lugs 26 formed on the cam plate 19 on the outer side of the recesses 22. A rearwardly extending arm 27 is provided on the plate 24 and an adjusting screw 28 is mounted in a fixed casting 29 secured to the pin 21 and projects through a threaded hole in the arm 27. A screw 30 is mounted in the casting 29 and bears on the arm 27. By the adjustment of these screws the plate 24 may be swung in either direction and the door centered in the opening without the necessity of passing from one side to the other oithe door to perform the adjusting operation. The workman having his screw driver at hand can center thedoor from one side without changing his position.

When the door is swung open the bearing of the cam plate will be on one of the bearings 23 until the door has moved to a point past the center, when it may be released and will stay in an open position. It may also be wcrrear portion of the door 2 has a 'rcl pushed still farther open, swinging on the bearing lu s 26 until one of the shoulders 31 on'the casting 29 is engaged by the sto 32 on the part (3 of the frame. When the I oor has been pushed back agiin t one of these stops and is released it will close automatically themomentum of tho'door and the tension of the spring being sutlieient to swing the door past'the center of its bearing or its normal osition when open.

I pro or to provide a ball bearing between the upper end of the pin 21 and the door, comprising rings and 34 with balls 35 between them, the ring 33 having a flange fitting within a socket 36 in the part 1 of the frame.

This construotion enables me to locate the ball bearing above the floor where it is less exposed to the accumulation of dust and dirt. The casing for the hinge consists preferably of lates 37 secured to the turned up end 7 of t 10 frame, and having the joint between them coma-sled by the linisa plate The opposite ends of the plates 37 are provided with inwardly projeoting hook portions win-a1 engage the part 10 on each side of the opening formed by the tongue 12, and are held in place thereby. In this way no screws will be visible on the side of the hinge to war the finished appear-mire.

When the door is opened and the bearings of the e-am plate transferred the coiled s )ring will he put under compression, the be t it; sliding (in the bolt 14 which server. not only to hold the bolt in place but as a guide during the sliding movement.

I claim as my invention:

1. Ina doul'le acting spring hinge, a frame having an upwardly turned part adapted to be secured to the rear edge of the door, and a horizontal bottom part in line substantially with the lower edge of the door, the inner end of said bottom' part being upwardly turned and terminating in a rearwardly extending part that is rigidly secured to said upwardly turned end, and the upwardly turned portion. of the forward end of said bottom part having a tongue pressed or punched therefrom for securing said frame to the door, substantially as described.

2. In a donble-acting spring hinge means capable of adjustment on one sideolthe door for c nte ing it when rlosed, said means including ad usting screws and a plate having a threaded "ole to lei-rive one of said screws and a surface to ronlart with the otherscreng substantially as described.

3. In a doubloacling spring hinge, a pivot pin, a casting secured thereon, adjusting screws mounted in said casting. a plate journaled onsqid pin and having a threaded hole to receive one ol said screws, and a surface to eontactwith the other screw, whereby the movement 01 one arrow will draw said plate in one dirertion and movenu-nt of the other I i l l l l l l l l i screw will push it in the opposite dii'eetion, for the purpose specified.

4. In a double-acting sp in: hinge, a pi ot in, a plate journaled thereon havin bearing ig s on each side of said pin and recesses on each side in the rear of said lugs, a-sliding bolt a spring thereon, and means for regulating its tension, a cam plate carried by said bolt and having recesses on each side of its center tov receive th bearing logs on said first-n med plate and said cam plate also having bearing lugs, which are ada ted to enter the recesses in the rear of the earing logs on said first named plate. and form secondary bearings, and being elleetive only when the door Is swung beyond a predetermined point in eitherdirection,substantially as described.

5. In a. double a -ting spring hinge, the combination with a fram of av slotted bolt therein, a spring coiled thereon, a ram plate mounted on one end of sail bolt and having lugs on each side thereof and recesses be tween said lugs and a bearing hm i115, lugs to enter said rem and on which said bolt and the door normally turn, and said bearing having reeesses in the rear of its lugs to receive the logs on said cam plate and thereby form a secondary bearing said lugs beco!ning ell'ectn-e only wlu-r: tlite d or approaches the limit of its OPE-I1 position, substantially as described.

6. In a double acting spring bingo, a frame. comprising upper and lower plates adapted to lit within a recess in the lower edge of the door, said lower plate having a stop formed thereon, a pivot pin, a rasling secur d thereto and shoulders provided on said casting and adapted to contact with said stop, substantially as. described.

7. In a double-aiding spring hinge, the (oinbinat-ion with a frame, of a bolt, a spring coiled thereon, a cam plate mounted on one end of said bolt and having double hearings on each side of the center thereof, astationary partarranged to contact with said (1111 plate and engage its bearings on either side successively, one bearing on either ride between said plate and part living el 'ective during the initial opening of the door in either direction and the other hearing on either side being ellective onl during the final move ment ol -he door toward an open position, said final movement separating the arts forming the initial bearing, substantial y as described.

In witness whereof, I have hereunto set my hand this. 16th day of May 1908. MARCUS A. ERIUKSON Witnesses:

ltionanu PAUL, J. A. liriNn'roN.

So I 

